New Pontiac 455 Turbocharged 1000 + HP $7,000

chromebumpers

solid fixture here in the forum
Staff member
I have been offered a trade, the other guy has this. Is this a good intelligent set up and is it worth at least $7K?

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462ci

Please read carefully. For $7000 you are getting the LONG BLOCK, not including some accessories you'll see in the pics.

Newly built boosted Pontiac 462ci engine. It was built to run on 91 octane pump fuel. The goal was multi-faceted. Build a high HP engine with better street manners than your average 750hp build while being reliable enough and quiet enough to drive 2 hours to the beach while enjoying the stereo, AC, power brakes. This engine was carefully built by a machinist who regularly works with boosted applications, and a mechanic who has raced Pontiacs in the family for decades. Every clearance was checked and double checked, from bearings to rocker arm geometry.

This engine in its previous configuration made 1064 hp at 15 psi. That was with iron 6x heads, a smaller and less efficient turbo and a smaller more restrictive exhaust. Now it will breathe and boost better.

462 ci complete engine boost ready. 1.5 hrs on break in stand, have videos. In storage for the last year. Complete 462 long block built for boost. Broken in already on break in stand with Brad Penn break in oil and single springs to break in cam carefully.
$7000

-Block 2 bolt main, interior valley area smoothed. Exterior smoothed, then painted base/clear coat House Of Kolor Galaxy Grey. Distributor plug drilled .020 for oiling

-ARP studs/bolts throughout

-Nodular crank polished

-Arias dished pistons

-Bill Miller aluminum rods

---everything carefully checked, and rotating assembly balanced by a competent machinist

-E-heads flowing 300 cfm on intake at .600 Exterior of heads have been polished, external oil drain at rear of heads to return oil to pan.

-Comp Cams solid lifter cam .518 lift after lash on intake, 516 on exhaust. This cam was purposefully chosen as an almost identical one in the engine's last life made peak torque at 4800 rpm and peak HP at 5500 rpm. The only real change was previously we used 1.5 rockers, and the cam had a drop more lift. To make the valvetrain super reliable we chose 1.65 rockers this time and dropped cam lift for the same overall lift. The springs and valves can take up to approximately 5.90 lift, but we didn't see the need. Cam degreed.

-Comp cams 800-16 solid lifters w/EDM oil hole (called cool face)

-Butlers 5/16 x .116 wall 4130 pushrods at 9.60 length

-Scorpion 1.65 roller rockers

-Lunati 73100 springs

-Stud girdle

-Valve cover spacers (base/clear coated House Of Kolor Galaxy Grey)

-Timing cover stock but smoothed of casting flash (base/clear coated House Of Kolor Galaxy Grey)

-MSD billet vacuum advance distributor

-All Pontiac aluminum valley pan (base/clear coated House Of Kolor Galaxy Grey)

-Precision Oil Pumps 80 psi Race series pump (Just like Butler's top blueprinted pump)

-Polished Northwind intake manifold

-mini starter (trying to remember which one)

(- KEEPING THE OIL PAN NOW. YOU WILL NEED TO SUPPLY YOUR OWN PAN.)

(-KEEPING THE VALVE COVERS, you'll need your own.)

(KEEPING THE MARCH SERPENTINE SETUP)


OPTIONS to add on or substitute*

If you prefer to go the fuel injected route we have a Super Victor 4500 style intake and a set of fuel rails brand new

Forward facing turbo headers for any of the following: 2nd gen F body, 2nd gen A body, or first gen A body. These can actually be had in either O or D port, mild steel with V bands

Polished Garrett 4788 T6 turbo
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You can buy Butlers 461-501 cubic inch engine for $13,000. They say up to 650 hp, and 625 ft lbs torque. But it's extra to get up toward the 501ci range and the 650 hp mark because that requires the forged crank, which is an upgrade.

The Butlers are great people. I don't claim to know them well, but have spoken with David and Jim Butler at length, and they sell good products and give great customer service. In fact, I discussed several choices I made on thi than theirs. You could buy one of those engines and have it built for boost. Only it will cost you $6000 more, and it WON'T have the following:

the E-heads ported. They'll be stock E-heads.

The heads WON'T be plumbed for oil return.

You WON'T get the stud girdles.

Not that its worth anything in the power dept but the Northwind intake and E-heads have been hand polished. Mirror polishing would do that for you though...if you want to spend
 
8

87vette81big

Guest
It looks nice Richard but does not tell the entire story.
A long time ago the limit of factory 455's was found to be 800-850 HP at the flywheel . Stock Block & stock nodular iron crankshaft used.
That's day in & day out severe drag racing duty.'
Last 500-1,000 full power passes. 5-10 years drag race.

A few have pushed to 1600 HP stock block & crankshaft.
400 Pontiac based.
How long they lasted I don't know.

Its a 455 block. bored .030" over. 462 ci now.

461 Pontiac is a 400 block bored to 4.151" & An aftermarket 4.25" stroke crankshaft used.

I see no special Holley Turbo Charge carb.
No Turbo.
No Turbo Headers & Y-pipe if single turbo.

Not a Faux....something is A-miss.

The Butler engine is fresh & yours.
You dont have the the car to use 1600 + HP.
You physical shape not great either.
Must pass a Full physical doctors test to get your NHRA Drivers Race License.
'And the several 1/4 mile driving tests.
 
8

87vette81big

Guest
Any heart conditions your not able to get an NHRA Race License 9.0 & faster.
 
8

87vette81big

Guest
The Butler Boys, Dave, Rodney, & the Old Man Father Dave are Legacies now.
Set the Pontiac world on fire 1987-to present.'
Many Race records held by them.
A BUTLER RACE ENGINE POWERS BIG CHIEF'S PRO MOD TITANIUM FIREBIRD.
IN HIS OLD GTO IT WAS A BUTLER PONTIAC V8 TOO.
TOOK ON THE VERY BEST IN THE WORLD.....RAN & WON THE MONEY $$$$$.
 
8

87vette81big

Guest
I spotted CC solid lifter on the build list.
Run Richard.
LOL
 

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
Im a bit confused are you getting these parts (listed below) thrown in or are they extra cost?

"OPTIONS to add on or substitute*

If you prefer to go the fuel injected route we have a Super Victor 4500 style intake and a set of fuel rails brand new

Forward facing turbo headers for any of the following: 2nd gen F body, 2nd gen A body, or first gen A body. These can actually be had in either O or D port, mild steel with V bands

Polished Garrett 4788 T6 turbo"

If you are, you obviously can,t build that engine for the $7000, if your only getting the long block, your still getting your moneys worth but its not in my opinion a screaming deal
 

chromebumpers

solid fixture here in the forum
Staff member
Thanks Brian, he's been after me for some shop equipment that caught his eye last time he picked over my goods. The stuff he wants is Likely worth $3,200 to $3,500 as a trade. I just thought this motor might be another trade or flip away from making a buck, old habits die hard.
 
8

87vette81big

Guest
The
Northwind Intake is kinda questionable Richard .
It was made to fit under the hood of 1970-1/2 to 1981 Trans Ams with a 350 Pontiac to a 455 standard block height with a Factory shaker hoodscoop.
I researched online and its not very good.
A few pictures showed a Northwind sitting Cock eyed Crooked on a high dollar Poncho engine.
China made & machined finished.
HP wasn't good either.
Factory iron Dual plane outperformed easy.
 

chromebumpers

solid fixture here in the forum
Staff member
I have a Pontiac trivia question for you Brian. What year Trans Am had the highest scoop sitting above the hood?
 
8

87vette81big

Guest
1977 had the lowest sitting shaker hoodscoop, special part number all its own.
All shaker fiberglass scoops were made by Barnum Fiberglass company, Its molded in on the underside of each hoodscoop.
 
8

87vette81big

Guest
I am recalling the 1978 Trans Am with the 403 & 1979 403.
Also the 1980 & 81 Trans Am with the Chevy 305 V8 connected to the Borg Warner 4-speed.
Shakers sat high.
 
8

87vette81big

Guest
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scoop.jpg


Well, it is another common topic that comes up quite often is the differences in the shaker scoops for the Trans Am between the years. The earlier years of shaker scoops from 1970 to 1976 are fairly similar. In the later years from 1977 to 1981 there are quite a few differences with the addition of available engines for the Trans Am. When looking at the shakers, there are really two main parts to the scoop that determines what year and what engine the scoop will fit. The main part is the shaker scoop itself which main style and shape helps determine what year it came from and is commonly made of a fiberglass or hard plastic. The second is the shaker base which determines what engine it fits on and is made of metal and attached to the main shaker scoop by rivets.

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In the earlier years from 1970 to 1976, the scoops basically remained the same shape. The scoops were rounded in the front and had gentle curves to it. And since the only available engine combinations were the Pontiac 400 or the Pontiac 455 (in varying flavors such as HO and SD), the shaker base was relatively the same. From 1970 until 1972, the scoop also had a functional "flap" at the rear opening of the scoop that was activated by the throttle and opened and closed depending on how much throttle was applied.

Now in 1977, things with the shaker scoops get a little bit trickier. Pontiac finally made a change to the shape of the shaker scoop. It was more streamlined and hard harder edges on it compared to the rounded style of the 1976 and earlier shaker scoops. 1977 was also a one off year for the design of the scoop itself. The scoop was only 2 inches tall and had a hard line ridge running down the center of the scoop.

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In 1978, the ridge down the center of the scoop disappeared and the scoop was heightened to 2 1/2 inches.

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So the shaker scoop sat a little bit higher out of the hood in 1978 (shown on the right) compared to 1977 (shown on the left).

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Now, also in 1977 with the addition of the Olds 403 engine, the bases of the shaker scoops also changed to accommodate the differences in the size and offset of the engines. So, the shaker scoops for the years 1978 to 1981 all had the same style when looking at the scoops from the top, but the bases attached to the bottom of the shakers is what changed. There were basically 4 different configurations for the shaker scoop bases from 1978 to 1981. There was the 400 base, the 403 base, the 301 base, and the 305 base. The shaker scoops themselves from 1978 to 1981 were all the same on top with the exception of the 305 shaker. The shaker for the Trans Ams with the 305 engine had a notch sticking out of the side of the scoop on the passenger side. So you can easily tell a 305 shaker scoop from the rest by looking at the outside.

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For the rest of the shakers from 1978 to 1981, the top part of the shaker assemblies were all the same for the 301, the 403, and the 400, but it was the bases that were different. The Pontiac 400 and the 301 shaker bases were all centered in the front middle of the shaker scoop. The difference between these shaker bases were that the 400 (W72 and the L78) the base ring measured 16 1/2 inches and the 301 base rimg measured only 14" wide. So, if you look at these two bases you can see that they are centered in the frontmiddle of the scoop.

scoopPontiac400a.JPG


Now, if you compare that to the L80 Olds 403 base ring, it is offcenter of the shaker scoop to the front and to the left. As you can see in the photos below how the base ring is offset to the front of the scoop and also off to the passenger side as well. You can also usually see this from top and side angles as well. You can also see from the side shot that the base ring of the L80 Olds 403 set-up that it is quite a bit taller than the 400 or 301 counterparts.

scoopOlds403a.JPG
scoopOlds403.JPG


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